Spraying device



Det. 1, 1936.` A y c. lD-DINGs' 2,062,787

SPRAYING DEVICE INVENTOR.

ATTORNEYS.

Dec. 1,1936. v v Q |DD1NGS I l 2,062,787

SPRAYING DEVICE Filed Nov. T5, `19.33 l 2 Sheets-Sheet 2 Patented Dec. 1, 1936 UNITED STATES PATENTl FFICE 2,062,781 spasms DEVICE can mames. staten mana, N. VY. Application November 15, 1933, serial No.

2ClalmS.

My invention relates broadly to a Spraying device and more particularly to an apparatus for spraying or applying liquids. v

The primary object of my invention is to pro vide an apparatus for spraying or applying self propelled liquids that are described and claimed in my copending application Serial No. 634,598 led Sept. 23, 1932.

An object of my invention is to provide a container with an air and gas tight seal having a valve and spray nozzle for use with a self propellent liquid.

Another object of my invention is to provide a liquid spraying device or apparatus that improves the economy in the use of sprays by eliminating all unnecessary spillage, evaporation and wastage. so that all but a very insignicant portion of the liquid, which necessarily remains in the container, can be effectively used.

A further object of `my invention is to provide a spray device that requires no pumping or manipulative action and one that can be easily and efiieiently handled.

Still another object of my invention resides in constructing in a spraying device a container having a valve that is not involved in its operation, easy to manufacture, for the most part from metal stampings, easy to assemble; simplicity with positive effectiveness governing the manufacture and use of the device.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts as will be dei scribed more fully hereinafter.

Reference is to be had to the accompanying drawings forming a part of this specification, in which like reference characters indicate corresponding parts throughout the several views, and in which:

Fig. 1 is a central sectional view in plan of my improved container and valve.

Fig. 2 is a modified Fig. 3 is an extended nozzle of my improved valve.

Referring more particularly to the drawings, I0 indicates a container having neck Il onto which is fastened cap I2 secured by means of collar I3 and gas tight gasket M. Projecting upwardly from the cap l2 is a valve supporting tube or throat i4 securely fastened to a valve housing I5 by means of a gas tight joint. The valve supporting tube Il is so connected to the valve housing l5 as to form a continuous internal passageway between the two parts. Extending down from the throat H. is syphon tube I6, preferably. but not necessarily. equipped with an enlarged end l1 which enlarged'end is fitted in and secured to the valve supporting tube Il.

The syphon tube I6 extends downwardly to a point I8 near the bottom of the container and detail of my improvedvalve.'

preferably near one: side as shawn in the drawings. The purpose-of m the syphon tube near one side as shuwiitaftfrte, topermltby slightly tipping the toward this side, a. more complete emptying of the container when used, thereby more fully the liquid contained therein.

'The valve housing i5 has an enlarged end t9, around which extend Banged sides 2l of a valve head or cap 2|, a 22 secured totheothet end and intermediate the ends an 23 into the valve su tube Il. Between the opening 23 and cap 2l. .'n the enlarged end I9, is a exible diaphragm that has its perimeter iastened to the housing; I5. thm and 15 firmly secured to me .,...m :nu 2l is a valve stem 25 that has a head through threaded 21 in can 2l, thus permitting the cap to rotate on the threaded portion 26. To limit out movement of cap 2l, m the end of the sterre is as at 2l. which end 28 is adapted to ilt into a groove 2i of heed 2l when the head is fmtliieopenpositionsossto form a practically and smooth external surface. a

Between opening and nome 22 is s valve or seal 30 consisting of a valve disk seat which stem 25 passes am a valve disk seemed to the end of the stem The valve disk is preferably made of a saft material 3|, auch as s :t resilient rubber, forced. into a metal cup 32 that in turn is fastened to the end of stem 25. The disk seat consists et im f' ring 33 having a flanged periphery' 3W secured to the inner walls of the housing I5 andiadared cone 3i a outwardly from and around the 3G in the ring. Thus, stem pesses through a eonsiricted opening 36 which iste permitxeade' flow of uids inQ the space the stein and the annnlanr sin: and out the end ci. 4 the cone 35 that is larger in diaxrreter V than opening 3G.

The purpose of this: is to a. loose guide for the valve 'stem'li thereby een.- tering the stem and an edge of the 4 cone 35 from pressing the seal at n point adjacent to the stem. Sach a ed jacent to the stemw would be oenducive topic' leakage and is accordarsi?? a in the indicated. i

Inserted in valve no Il between the seal and the nozzle 22 isaaibfnck S with spiral cui! 3G such` that fluids passing the ents and into an opening 39 just basket nozzle 22 receive a swirling motion, thus 1-i in-theof a fine uniform spray.

To lock the valve. sin cidentally opened and te further dem@ 30 to avoid losses by' slow leakage. the had 2l is rotated about the t` end of stan 2i uut 3th,. er.. urface of the head 2l bears firmly against the end I9 of the valve housing I5.

'I'he flexible diaphragm 24 is shaped with annular grooves for the purposes of providing greater flexibility and permitting a greater length of travel for the valve stem 25 betweenits extreme positions. ,also, preferably but nof're`t:ess`ari ,'-iinbntedinfthe valve under slight compression so that the tension produced thereby tends to press the soft material 3I tightly against the outer edge of cone 35. In Figure 2 I have shown a bellows 42- in place of the dlaphragm 24, however, the operation of these two spring seals are the same@ An important feature of s invention is that the area of the flexible diaphragm 24 and/or bellfluids Within the valve, is the'seal 30 encompassed =urpose of this feal, l ithin the container er lx' vaine'd exceeds that of l V tslciev of the container, for"as"s'i's"t'i'ng"in main ainin'g a tight seal at 30 operation. It is also my a l nd connections, with the exceptioncfm vingheadfZI, gas tight.

l-Irilthlpractrcal,operation,of my improved dev'icejI first pl'acewithinthe container II) a liquid 4D ,which lnuade accordance with the method s'et outin rny .copending' application Serial Number 634,598.v Theliquid has in solution a suilicient amount of avolatile "component to create Within the containerfatot'al absolute pressure in excess o"f one vatmosphere when the container and its contentsarev at or` near normal atmospheric temperature. The valve housing I5 is secured and 'sealed by cap l-I."if and made gas tight by means of gasketd and *after4 the syphon tube I6, valve supportingA tube I4 and Acap I3, and valve housing I5 have been assembled', a continuous and always open passageway will be provided from the inside of the container I0, lthrough the syphon tube I6, through the valve supporting tube I4 and into the central portion of the interior of the valve housing I5 through the opening 23. To operate the device the valve head 2I is rotated about the threaded portion 26 so thatit travels away from the valve housing I5 until the head 2l reaches the dotted position 4I whereby its further movement is prevented by means of the stem end 28. To provide a spray as desired, the valve head 2I is now depressed by means of externally applied pressure in the direction of the nozzle 22 against the spring action of the diaphragm 24, and the pressure against it causing the stem 25 to travel in the same direction and carrying with it the cup 32 and insert 3| which thereby becomes separated from the valve seat or end of cone 35 and creates an open passageway for the liquid 48 which, due

60 to its self propellent properties, is forced through the tube I6, through the open throat I4, through opening 23 into the inside of the valve housing I5, through. the .annular space between the'ring opening 36 and the stem 25, through cone 35, through the annular space between the cup 32 and the valve housing I5, through the spiral slots 38 of the block 3`I,A through the open conical space 39 and finally in the lform of a ne and uniform spray through the nozzle 22. To stop the spraying the externally applied pressure upon the valve head 2l is released, permitting the diaphragm 24 to return to its normal position thereby moving valve stem 25 in a direction` away from the nozzle 22 until the soft rubber 3l is brought into contact with its seat or outer edge ofcone 35 thereby shutting off the flow of uids to the nozzle 22. To lock the valve for the purpose of preventing slow leakage of the contents of .the container during long periods of storage, or when the valve head 2l might be accidentally struck, the head 2 Il is turned on its axis s o that it travels on the threads 26 in the direction toward the nozzle 22 until the inside face of the head 2I is brought into firm contact with the end of the valve housing I5. A further slight movement of the head 2| causes a slight pressure between the inner face of head 2I the end of the housing I5 which is transmitted by the stem 25 to the rubber insert 3| and the edge of cone 35. When it is desired to use the apparatus again for the purpose of creating a spray, it is only necessary to iirst unscrew the head 2I te the position 4I, at which locality the apparatus is again ready for use.

' The outer end of the valve tube I5 can be iitted with threads 55 as shown in Figure 3 suitable for attaching a flexible or inflexible extension 43 for conveying the vapors or mists to a greater distance from the container before releasing them through a nozzle to the atmosphere, or before directing them against the object to be sprayed. When using an extension, the nozzle 22 and/or the entire tube I5 could be moved to the outer end of the extension which can be attached either to the outer end of the valve housing I5 and/or to the valve supporting tube I 4.

It will be understood that the above description and accompanying drawings comprehend only the general and preferred embodiment of my invention and that various changes in construction, proportions and arrangement of the parts may be made within the scope of this invention and appended claims without sacrificing any of the advantages of the invention.

What I claim is:

1. In a spraying device, a housing having an outlet port and anv expanded portion opposite said port, a valve seat and valve disk adapted to bear against said seat for closing the outlet port, a flexible diaphragm hermetically sealed in tension to the inner surface of the expanded portion of the housing, the inner surface area of the diaphragm being greater than the inner area of said disk, an operating stem secured to the diaphragm and disk, and an inlet portin the housing between the diaphragm and' valve seat whereby pressure passing through the inlet port directly contacts the inner surface of the diaphragm and, acting in conjunction with the tension of the diaphragm, exerts through said stem a positive force for holding the disk firmly against said valve seat.

2. In a spraying device, a housing having an outlet port, a valve seat and a valve disk adapted to bear against said seat for closing the outlet port, a flexible diaphragm hermetically sealed in tension to the inner surface of the housing, the inner surface area of the diaphragm being greater than the inner area of said disk, an operating stem secured to the diaphragm and disk, and an inlet port in the housing between the diaphragm and valve seat whereby pressure passing through the inlet port directly contacts the inner surface of the diaphragm and, acting in conjunction with the tension of the diaphragm, exerts through said stem a positive force for holding the disk firmly against said valve seat.

CARL IDDINGS. 

